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There are going to be several built motor supercharged S65 V8 M3 V8 setups starting to roam the streets this year. ESS will have the VT2-725, Gintani will have their Stage III and Stage III+, and Active Autowerke will have their level 4. Each takes a different approach with ESS using the same Vortech V3Si blower their kits already employ, Gintani offering Vortech T-Trim, V3, and YSI options, and Active Autowerke employing a Rotrex C-38 but is able to accommodate other blowers as well.

Here is the different between a VT3-725 and a VT2-625 supercharger setup, both on DCT M3's with meth in SAE correction:

645 wheel for the built motor setup and 586 wheel for the stock internal setup. VT2-650 kits claim to be over 600 wheel on stock internals so one has to ask themselves if it is worth the cost to build a motor for only 50 wheel horsepower? $15,000+ on top of the supercharger kit for 50 wheel? Sure this power will likely be more reliable but one has to scratch their head at this price for performance ratio. It certainly makes sense to upgrade to a VT3 setup if one were to take the stock motor too far though.

The Vortech blower used here is approaching its limit. For a built motor application, it would seem to be a bit undersized as 12 psi is not providing all that much versus the 7.5 psi of the stock internal kit partially due to the lower compression. To really see solid gains a bigger blower is necessary. Gintani has shown up to 16.5 psi with a Vortech YSI thus far and higher dyno results on the lower reading Dyno Dynamics dyno.

Hopefully a comparison of the three major built motor setups will be able to be made soon.

Power seems reasonable to me. Things get exponentially more expensive as you get closer to the leading edge of development in car tuning. Power is cheap-ish stock or for a simple blower setup. Start messing with rebuilt motors, a setup that only a limited amount have in the world, and the price goes up. I don't see that as a surprise personally.

Power seems reasonable to me. Things get exponentially more expensive as you get closer to the leading edge of development in car tuning. Power is cheap-ish stock or for a simple blower setup. Start messing with rebuilt motors, a setup that only a limited amount have in the world, and the price goes up. I don't see that as a surprise personally.

I see the surprise here in the very modest gains. A built motor has a ton more in it but then again he doesn't have a sleeved block so it isn't really doing the S65 justice.

Shiiiiiiiiiiiiit, I don't know anyone that tracks more than Klammer and his car is going strong. Track miles are harder on the car...people need to be realistic about things. No engine will last forever and parts do wear. What oversights/design-flaws may be accelerating wear, if any, is what is in debate in my opinion.

Shiiiiiiiiiiiiit, I don't know anyone that tracks more than Klammer and his car is going strong. Track miles are harder on the car...people need to be realistic about things. No engine will last forever and parts do wear. What oversights/design-flaws may be accelerating wear, if any, is what is in debate in my opinion.

I agree regarding track wear but if I thought there wasn't an issue would I really be prepared to shell out $7k to dry sump mine?

Shiiiiiiiiiiiiit, I don't know anyone that tracks more than Klammer and his car is going strong. Track miles are harder on the car...people need to be realistic about things. No engine will last forever and parts do wear. What oversights/design-flaws may be accelerating wear, if any, is what is in debate in my opinion.